The only other free agent 3B left are Chase Headley and Mark Reynolds. Both are in decline. Headley is a possiblility since he played in SD for Bochy years ago. Reynolds is a power hitting guy, but batted .196 last season. I don't want either guy.
Already on the team is Joaquin Arias and Matt Duffy. Duffy is 22 I think. Has potential but too early to tell if he will pan out. They already lack pop in the lineup, so losing Panda's bat and extraordinary defense was a big blow to the team.